Dorman 674-249 Exhaust Manifold - Right

Dorman Exhaust Manifold for Right Side Repair

This Dorman exhaust manifold is precision-engineered to match the fit and function of the original manifold on specified vehicles. Built from cast iron with a natural finish, it is made for a direct repair on the right side of select Chevrolet and GMC vans and chassis applications. Part number 674-249 includes the gasket, heat shield, and downpipe hardware needed for a complete exhaust manifold service.

Key Features

• Cast iron construction for durable exhaust service
• Natural finish with square port shape
• Includes gasket, heat shield, and mounting hardware
• Direct replacement for the original manifold on listed applications
• Fits right-side exhaust manifold locations
• Part number 674-249 for easy identification

Detailed Description

Dorman 674-249 is an exhaust manifold replacement for select 1987-1994 Chevrolet G10, Chevrolet G20, GMC G1500, and GMC G2500 models, plus 1987-1990 Chevrolet G30, Chevrolet P30, GMC G3500, and GMC P3500, and 1987-1989 Chevrolet P20 and 1988-1989 GMC P2500 applications. It is engineered to restore the original fit and function of the factory manifold, with a cast iron body, square port design, and included heat shield for service on the right side. This part cross-references 10166158 for the same application. If you are sourcing a right exhaust manifold for a Chevrolet G10 or GMC G1500, 674-249 provides a direct-fit repair solution.

Common Repair Uses

• Cracked or leaking exhaust manifold replacement
• Exhaust noise at the manifold-to-cylinder-head area
• Broken or corroded manifold mounting points
• Damaged gasket sealing surfaces
• Heat shield service during manifold repair

Installation Notes and Tips

Verify the vehicle’s right-side application before installation and compare the port shape, mounting points, and included hardware to the original part. Clean the cylinder head sealing surface thoroughly and inspect the downpipe connection for wear or corrosion before assembly. Use new gaskets and follow factory torque specifications during installation. Part number 674-249 is intended for the listed Chevrolet and GMC fitments only.

Quality Assurance

This Dorman exhaust manifold is manufactured to match original fit and function on specified vehicles and is built for regular-duty replacement service.